JPH0611001Y2 - Dialysis machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial field of application" The present invention relates to a dialysis device for removing waste products and water from blood.

"Prior Art" A dialysis machine includes a blood circuit connected to a dialyzer, a dialysate circuit connected to the dialyzer, a blood pump provided in the blood circuit, a dialysate pump provided in the dialysate circuit, and An ultrafiltration pump is further provided, and generally, a target filtration amount setting means for setting a target ultrafiltration amount, a filtration speed setting means for setting an ultrafiltration speed, and the filtration speed setting means are set. And a control device for performing ultrafiltration based on the ultrafiltration rate, and at least one of the set value by the target filtration amount setting means and the set value by the filtration speed setting means is a set value. It can be changed even during ultrafiltration.

In this type of dialysis device, if the target ultrafiltration rate is set in the target filtration rate setting means and the ultrafiltration rate is set in the filtration rate setting means, the control device is set to the set ultrafiltration rate. When the ultrafiltration pump is controlled to an appropriate operating speed based on the filtration rate and the ultrafiltration of the target ultrafiltration amount is performed, the pumps are automatically stopped. .

[Problems to be Solved by the Invention] By the way, after changing the setting value of the target filtration amount setting means and / or the setting value of the filtration speed setting means after dialysis is started, For some reason after the start, the initially scheduled dialysis time cannot be secured, and there are many demands for completing the dialysis within a shorter time.

In such a case, conventionally, how to change the set value with a calculator etc. is calculated to complete dialysis within the desired remaining time, and when the desired calculation result is obtained, the set value is changed based on it. Since it was done, the change work was complicated.

"Means for Solving the Problem" In view of such circumstances, the present invention provides a set value set in the target filtration amount setting means, a set value set in the filtration speed setting means, and further up to that point. The remaining time calculating means for calculating the remaining time required for performing the ultrafiltration of the target ultrafiltration amount from the completed ultrafiltration amount and displaying the remaining time, and the remaining time. When the numerical value set in the target filtration amount setting means or the filtration speed setting means is changed by the calculating means, the remaining time is recalculated based on the changed numerical value and displayed. is there.

[Operation] According to the above configuration, each time the setting value is changed, the remaining time until the completion of dialysis is recalculated and displayed.
When it is requested to change the time until completion of dialysis,
It is very easy and quick to meet that demand.

[Embodiment] The present invention will be described below with reference to the illustrated embodiment. In FIG. 1, the inside of the dialyzer 1 is divided into a blood chamber 3 and a dialysate chamber 4 by a semipermeable membrane 2, and Blood circuit 5
And the dialysate circuit 6 is connected to the dialysate chamber 4.

The blood circuit 5 includes a supply-side flow path 5a for supplying blood from the patient to the dialyzer and a discharge-side flow path 5b for returning the blood dialyzed by the dialyzer 1 to the patient.
A blood pump 7 is provided at 5a.

On the other hand, the dialysate circuit 6 includes a supply-side channel 6a for supplying fresh dialysate to the dialysate chamber 4 of the dialyzer 1, and the dialyzer 1
The discharge side flow path 6b for discharging the treated dialysate after being dialyzed by the above, the supply side flow path 6a and the discharge side flow path.
6b is provided with a dual dialysate pump 11 that supplies and discharges a fresh dialysate into the dialysate chamber 4 and a treated dialysate from the dialysate chamber 4 in a matched state.

Then, in the discharge side flow path 6b, an ultrafiltration pump 12 is provided between the dialysate chamber 4 and the dialysate pump 11, and the processed dialysate is discharged from the dialysate chamber 4 by the pump 12, The amount of treated dialysate from the dialysate chamber 4 is made larger than the amount of fresh dialysate to the dialysate chamber 4, and the increased amount becomes the ultrafiltration amount.

However, the operation of the blood pump 7, dialysate pump 11 and ultrafiltration pump 12 is controlled by a control device 13, and the control device 13 is, as shown in FIG. Target filtration amount setting means 14 for setting the target ultrafiltration amount, filtration speed setting means 15 for setting the ultrafiltration speed, and elapsed time display means 16 for displaying the elapsed time from the start of ultrafiltration. The remaining time calculating means 17 for displaying the remaining time required for performing the ultrafiltration of the target ultrafiltration amount.

The control device 13 controls the operating speed of the ultrafiltration pump 12 based on the ultrafiltration speed set in the filtration speed setting means 15 to perform proper ultrafiltration, and From the ultrafiltration rate and the elapsed time, the ultrafiltration amount that has been completed up to that point is always calculated and stored, and when the target ultrafiltration amount is performed, each of the pumps 7 It is possible to stop the operation of the 11, 12 and 11. The ultrafiltration amount at each point of time does not necessarily have to be obtained by calculation, and it goes without saying that it may be obtained by measuring the actual ultrafiltration amount.

Then, the remaining time calculating means 17, the set value set in the target filtration amount setting means 14, the set value set in the filtration speed setting means 15, and the ultrafiltration amount completed by that time. Therefore, it is possible to calculate and display the remaining time required to perform the ultrafiltration of the target ultrafiltration amount.

Next, the set value by the target filtration amount setting means 14 and the set value by the filtration speed setting means 15 can be changed even after the ultrafiltration is started. During external filtration, when the numerical value set in the target filtration amount setting means 14 or the filtration speed setting means 15 is changed, the remaining time calculating means 17 determines the remaining time based on the changed numerical value. It can be recalculated and displayed.

In the above configuration, when performing dialysis, while setting the target ultrafiltration rate in the target filtration rate setting means 14 of the control device 13, set the ultrafiltration rate in the filtration rate setting means 15, then The controller 13 is instructed to start dialysis. Then, the control device 13 causes the blood pump 7 and the dialysate pump 11 to operate.
At the same time that the operation of (1) is started, the ultrafiltration pump 12 is operated at a rotation speed based on the ultrafiltration speed set in the filtration speed setting means 15.

When the dialysis is started in this way, the control device 13 always calculates and stores the ultrafiltration amount and the ultrafiltration amount completed up to that time from the ultrafiltration speed and the elapsed time, and the remaining time calculating means 17 From the finished ultrafiltration amount, the set value set in the target filtration amount setting means 14, and the set value set in the filtration speed setting means 15 are the limits of the target ultrafiltration amount. Displays the remaining time until the outer filtration is completed. Furthermore, the elapsed time display means 16 displays the elapsed time from the start of ultrafiltration.

Next, during the dialysis, for example, when it is desired to end the dialysis in a time earlier than the remaining time displayed, the set value by the target filtration amount setting means 14 and the set value by the filtration speed setting means 15 At least one of them may be appropriately and, more specifically, the target ultrafiltration amount may be decreased or the ultrafiltration rate may be increased.

Then, the remaining time calculation means 17 immediately sets the target value based on the set values newly set in the target filtration amount setting means 14 and the filtration speed setting means 15, and the ultrafiltration amount completed by that point. Recalculate and display the remaining time until the end of ultrafiltration of the ultrafiltration amount, and the controller 13
When the ultrafiltration rate set in the filtration rate setting means 15 is changed, the ultrafiltration pump 12 based on the new set value is set.
To control the driving speed.

When the target ultrafiltration amount is completed,
The control device 13 stops the operation of each of the pumps 7, 11 and 12.

[Advantage of Device] As described above, according to the present invention, while watching the remaining time displayed on the remaining time calculation unit, the set value by the target filtration amount setting unit and the set value by the target filtration amount setting unit are set so that the remaining time becomes a desired time Since the setting value by the filtration rate setting means can be changed, there is an effect that the changing operation can be performed much easier and faster than in the conventional case.

[Brief description of drawings]

FIG. 1 is a circuit diagram showing an embodiment of the present invention, and FIG. 2 is a front view showing a display portion of a control device 13. 1 ... dialyzer, 5 ... blood circuit 6 ... dialysis fluid circuit, 7 ... blood pump 11 ... dialysis fluid pump, 12 ... ultrafiltration pump 13 ... control device, 14 ... target filtration rate setting Means 15: filtration speed setting means, 16: elapsed time display means 17: remaining time calculation means

Claims (1)

[Scope of utility model registration request] 1. A target filtration rate setting means for setting a target ultrafiltration rate, a filtration rate setting means for setting an ultrafiltration rate, and an ultrafiltration rate set in the filtration rate setting means. And a control device for performing ultrafiltration, and at least one of the set value by the target filtration amount setting means and the set value by the filtration speed setting means can be changed during ultrafiltration. In the dialysis machine that has become, the set value set in the target filtration amount setting means, the set value set in the filtration speed setting means, and the ultrafiltration amount completed by that time point, The remaining time calculating means for calculating the remaining time required for performing the ultrafiltration of the target ultrafiltration amount and displaying the remaining time is provided, and the remaining time calculating means is the above-mentioned target filtration amount setting means or Set as filtration speed setting means A dialysis machine characterized in that, when the calculated numerical value is changed, the remaining time is recalculated and displayed based on the changed numerical value.